CN201470284U - Electric-bag combined dust collector - Google Patents

Electric-bag combined dust collector Download PDF

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Publication number
CN201470284U
CN201470284U CN2009203079058U CN200920307905U CN201470284U CN 201470284 U CN201470284 U CN 201470284U CN 2009203079058 U CN2009203079058 U CN 2009203079058U CN 200920307905 U CN200920307905 U CN 200920307905U CN 201470284 U CN201470284 U CN 201470284U
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CN
China
Prior art keywords
bag
dust collecting
dust
pole plate
electric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2009203079058U
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Chinese (zh)
Inventor
李先明
杨贤安
王兴高
张岸伟
吴历镓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG HONGYU ENVIRONMENTAL PROTECTION ENGINEERING EQUIPMENT Co Ltd
Original Assignee
ZHEJIANG HONGYU ENVIRONMENTAL PROTECTION ENGINEERING EQUIPMENT Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by ZHEJIANG HONGYU ENVIRONMENTAL PROTECTION ENGINEERING EQUIPMENT Co Ltd filed Critical ZHEJIANG HONGYU ENVIRONMENTAL PROTECTION ENGINEERING EQUIPMENT Co Ltd
Priority to CN2009203079058U priority Critical patent/CN201470284U/en
Application granted granted Critical
Publication of CN201470284U publication Critical patent/CN201470284U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a dust collector, in particular to an electric-bag combined dust collector which integrates electrostatic dedusting with filter dedusting. The electric-bag combined dust collector comprises a support, an intake flue and an air outlet are arranged on the support, the support is provided with at least one dust collector, each dust collector comprises a box body, the upper portion of the box body is provided with an air distributing pipe communicated with the intake flue, at least one set of electric-bag mixing mechanism is arranged below the air distributing pipe, the electric-bag mixing mechanism comprises a dust collection polar plate which is provided with a notch, electrode rods are arranged in air passages among the dust collection polar plates, filter bags are arranged among the dust collection polar plates, and the bottom of each box body is provided with a dust collecting hole. The electric-bag combined dust collector is simple and compact in structure, high in dust collection rate by aid of sufficient electric-bag combination and low in cost, resistance and operating expense, and can remove other pollutants simultaneously.

Description

The hybrid deduster of electricity bag
Technical field
The utility model is a kind of cleaner, and particularly a kind of electrostatic precipitation and dust removal by filtration are mixed into the hybrid deduster of electricity bag of one.
Background technology
The technology that existing dedusting method generally adopts is electric cleaner, bag dust collector and preceding electricity back cloth convolution deduster, but all has certain limitation separately.
There is following limitation in electrostatic precipitator: 1. electrostatic precipitator is limited to ultra-fine grain (as PM2.5) trapping ability, and this mainly is to produce the easier fine particle that has captured that makes of reentrainment of dust and overflow because ultrafine particle is difficult to charged, electrode rapping.2. the efficiency of dust collection of electrostatic precipitator is subjected to all multifactor (as cigarette temperature, flue gas flow rate, flying dust characteristic, sulfur content etc.) influence, and it is bigger to fluctuate, and this stable, efficient operation to electrostatic precipitator has caused very big influence.3. country strengthens the control to sulfur dioxide (SO2) emissions, and the concentration of sulfur dioxide in flue gas reduces to make and raise than resistance in the flue dust, and cause the anti-corona of electrostatic precipitator to strengthen, efficiency of dust collection reduces.
The existing limitation of bag dust collector is except that problems such as running resistance is big, also just like life of bag filter problem (stick with paste bag, burning bag, leak-off pocket and corrosive wear and all influence life of bag filter).How to prolong life of bag filter, reduce the replacing number of times of bag, reducing daily maintenance cost is a hot fields of current research.Though can be according to pending smoke property in the bag dust removal design stage, select for use suitable filtrate to avoid sticking with paste bag and burn bag (having increased some as the bypass flue, promptly heat cooling auxiliary equipment etc.) to improve the safety coefficient of its operation for some large-scale bag dust collector, but just can allow bag filtration regenerate owing to removing attached to the dirt cake on the bag, therefore the deashing of filter bag is essential, deashing is thorough more good more, helps the operation of deduster steady and continuous more.But the filter bag exciting of deashing product sound and when filtering wind speed and dust granules to the pondering of filter bag, to having played main influence the service life of filter bag.
Electricity bag combined dust catcher is the dedusting method of level bag-type dust behind a kind of prime electric precipitation, after dust enters electric field, after at first the most of dust in the flue gas being removed by electric precipitation, the charged laggard bag dedusting area of going into of remaining dust, this has just founded a new condition of work for the bag dedusting, be after charged dust enters bag dedusting zone, when most of electronegative dust is adsorbed onto the filter bag surface, because charged dust major part is electronegative, the dust of same sex electric charge repels mutually, thereby form arrangement in order on the filter bag surface, the dust layer of short texture.In electric field, contain the charges of different polarity in addition, produce electric coalescence, become bulky grain by the granule coalescence,, make the dust that enters the filter bag district charged and great variation has taken place dust layer character that form because of the effect of high voltage electric field, both changed the dust size size, change the dust stacking states again, compare with the dust layer that the filter bag surface neutral particle of conventional bag dedusting forms, the gas permeability of dust layer is better, deashing property is also better, and the arresting efficiency that improves the PM2.5 minuteness particle is had tangible effect.Chinese patent CN101028576, a kind of assembled electric bag dust collector is disclosed, be composed in series by electric cleaner and sack cleaner, the each several part composition is: diaphragm, cloth bag and skeleton, flue gas buffler, ash bucket, high-voltage electric device, cloth bag soot cleaning system, exhanst gas outlet between import smoke box, electric precipitation anode and cathode part, electric precipitation and bag-type dust; It is characterized in that the diaphragm between electric precipitation and bag-type dust plays the effect of water conservancy diversion and uniform air-flow; Be provided with the flue gas transfer valve in described flue gas buffler, the detector unit in this transfer valve and the flue matches, and can automatically flue gas be entered chimney when flue-gas temperature is too high, prevents that the situation of burning bag and sticking with paste bag from taking place; The bottom and the top of the dirt pocket of being made up of cloth bag and skeleton are equipped with lift valve, can realize the function of off-line ash-clearing and on-bne repair.This patent of invention is described to be exactly a kind of deduster of preceding electric back pkt., after dust enters electric field, only needs the electric charge of utmost point short time dust to finish substantially.But in a single day dust leaves electric field, and the recombination velocity of electronics is also very fast, and after positron-electron, ion were compound, dust lost electric charge and just do not produce electrostatic efficiency in the filter bag district.
Summary of the invention
The utility model cleaner mainly is to solve the deficiencies in the prior art, and a kind of deduster that static part and filter bag is replaced arranged is provided.
The above-mentioned technical problem of the utility model deduster is mainly solved by following technical proposals:
The hybrid deduster of a kind of electricity bag, comprise support, support is provided with the air intake flue, on support, be provided with one and above deduster, described deduster comprises casing, the top of casing is provided with the gas-distributing pipe road that is connected with the air intake flue, the below on gas-distributing pipe road is provided with one group and above electricity bag mixed organization, electricity bag mixed organization comprises dust collecting pole plate, dust collecting pole plate is provided with breach, crossing in the wind passageway between dust collecting pole plate is provided with electrode bar, is provided with filter bag between dust collecting pole plate, and the bottom of casing is provided with dust collecting opening.Deduster organically combines electric precipitation and bag dedusting at same air chamber, no matter still be that dust is in the transmission of ash bucket in the particle collection process, the two can both interact well, high particle collecting effect is provided, overcome the problem that a large amount of fine graineds are escaped in the conventional electrostatic dedusting, the problem that has solved conventional cloth bag filter reentrainment of dust simultaneously and collected repeatedly.For 0.1? the particle of 0 μ m, collection rate surpass 99.99% and expense be lower than prior art.Most of particle that flue gas carries was removed before arriving filter bag.The dust collecting pole plate that has breach leads to filter bag by flue gas, and the dust collector pole that has breach is except catching charged particle, and playing also that effective protection is any may be from the electrostatic breakdown effect to filter bag of electric field.Dust collector pole and discharge electrode periodically adopt the mechanical vibrator deashing, because flue dust had had major part to be captured by electric field before arriving filter bag, remaining charged dust enters into the filter bag surface makes dust layer loose, it is poor that online ash removal can be kept lower and uniform bag external and internal pressure, so the comparable traditional pulse jet filtrate of filtration velocity is high 2 times, can under higher air cloth ratio, move, therefore the filter element that needs still less, system maintenance work amount and expense just can significantly reduce, and performance is also more reliable and more stable.
As preferably, the electricity bag mixed organization in the described deduster is the offset formula and distributes, and electricity bag mixed organization and casing fix.
As preferably, the top of the dust collecting pole plate in the described deduster is provided with deep bead, the two ends of casing are respectively one group of filter bag and dust collecting pole plate, and the centre of tank ends is provided with electricity bag mixed organization spaced apart, are provided with two groups of filter bags between the dust collecting pole plate in the described electricity bag mixed organization.
As preferably, two groups of filter bags between described dust collecting pole plate are listed as side by side, and dust collecting pole plate is provided with a plurality of breach, and described electrode bar is positioned at the centre bit of dust collecting pole plate, and the breach on the dust collecting pole plate is positioned at the centre of two filter bags.
As preferably, described dust collecting opening is a back taper, and the bottom of dust collecting opening is provided with ash-valve.
The hybrid deduster of electricity bag described in the utility model has following advantage: 1. the hybrid deduster of electricity bag can organically combine both different dust removal mechanisms, utilize electric cleaner to collect the advantage of crude particle dust, reduced the dust concentration that sack cleaner is handled; Utilize the high performance filtration characteristics of sack cleaner, overcome the weakness that electric cleaner is collected the fine dust scarce capacity; Dust after charged has increased the porosity of knoisphere in the orderly arrangement in filter bag surface, has reduced filtration resistance, has improved the life-span of filter bag, has reduced operating cost, has given full play to the advantage of two kinds of dust removal mechanisms.2. the hybrid deduster of electricity bag is not only applicable to newly-built project, and be well suited for the transformation of old electric cleaner, many original three electric fields or four electric field electric cleaners are owing to numerous reasons, now can not qualified discharge, increase the conventional cleaner reform of collecting the dirt area if adopt, not only be subjected to dust characteristic and investment influence, but also be subjected to the restriction in place.If be transformed into this novel electric bag dust collector, not only can solve the problem of qualified discharge fully, and be transformed into bag dust collector than merely, its transformation and operation, maintenance cost are all low, and service life is also long.The more important thing is, because compact conformation, and can both reduce total area,, have more significant advantage at some special occasions than preceding electric back pkt. arranged in series.3. the bag dedusting is that the bag type filtering element that utilizes fibrous braid to make captures the solid particle in the dusty gas.Though it has the efficiency of dust collection height, discharging is stable, and is not subjected to the influence of dust characteristic, yet there is the big weakness of running resistance in it.Is the resistance of bag dust pelletizing system generally all 1500? 000Pa, the resistance of electricity bag tandem deduster generally can be reduced to about 1000Pa.But novel electricity, bag dust collector are after filtration velocity can double, and SR and tandem electricity bag dust collector can be suitable, even low slightly, can drop to about about 800Pa.Its reason is to be suspended in the ion collision that particle in the flue gas and discharge electrode produce and obtains electric charge, charged particle convergence dust collection plate and gathering in the above under the electric field force effect, because dust collecting pole plate has been opened many holes, flue gas and the charged particle do not collected by ESP will flow to cloth bag by perforated panel like this, make the dust layer on filter bag surface orderly and loose, improve the gas permeability of dust layer, made deashing property better, thereby reduced running resistance effectively.4. electric bag dust collector has high capture effect to the PM2.5 fine dust, causes the outlet concentration of emission lower, even can reach≤30mg/Nm 3, meet the demand for development of atmosphere polluting controling technology from now on.And this deduster is more reliable more and stable than simple electric cleaner or bag dust collector operation, and the workload of repair and maintenance significantly reduces, and running cost reduces.5. in the deduster structure of preceding electric back pkt. series connection, in order to cooperate with the back bag dust collector, the electric cleaner of front will be done great renewal, otherwise just can not give full play to whole effect of electric field, because the prime electric field is horizontal air inlet, back flour bag dedusting is mainly by the bottom air inlet, if air current composition is not deeply worked, both are taken into account, have only the partial action of sacrificing the prime electric field to make cost, enter electric field and filter bag and the air-flow of this electricity, bag dust collector all is a level, make electric field and cooperating of filter bag obtain best optimization.
Because of a little, the hybrid dedusting of electricity bag described in the utility model, simple and compact for structure, the electricity bag fully mixes, the dust removal efficiency height, cost is low, and the ability of other pollutant of cooperation-removal is arranged, lower resistance, the cost of the low operation of income.
Description of drawings
Fig. 1 is the structural representation of monomer deduster of the present utility model;
Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: as Fig. 1, shown in Figure 2, the hybrid deduster of a kind of electricity bag, comprise support 1, support 1 is provided with air intake flue 11, on support 1, be provided with one and above deduster, described deduster comprises casing 2, the top of casing 2 is provided with the gas-distributing pipe road 3 that is connected with air intake flue 11, the below on gas-distributing pipe road 3 is provided with one group and above electricity bag mixed organization, electricity bag mixed organization comprises dust collecting pole plate 4, dust collecting pole plate 4 is provided with a plurality of breach 5, be provided with electrode bar 6 in the mistake wind passageway 12 that dust collecting pole plate is 4, electrode bar 6 is positioned at the centre bit of dust collecting pole plate 4, breach 5 on the dust collecting pole plate 4 is positioned at the centre of two filter bags 7,4 of dust collecting pole plates are provided with two groups of filter bags 7 of establishing side by side, the top of the dust collecting pole plate 4 in the deduster is provided with deep bead 9, the two ends of casing 2 are respectively one group of filter bag 7 and dust collecting pole plate 4, the centre at casing 2 two ends is provided with electricity bag mixed organization spaced apart, electricity bag mixed organization in the deduster is the offset formula and distributes, electricity bag mixed organization and casing 2 fix fixing, the bottom of casing 2 is provided with dust collecting opening 8, and dust collecting opening 8 is a back taper, and the bottom of dust collecting opening 8 is provided with ash-valve 10.

Claims (6)

1. hybrid deduster of electricity bag, comprise support (1), support (1) is provided with air intake flue (11), it is characterized in that: on support (1), be provided with one and above deduster, described deduster comprises casing (2), the top of casing (2) is provided with the gas-distributing pipe road (3) that is connected with air intake flue (11), the below on gas-distributing pipe road (3) is provided with one group and above electricity bag mixed organization, electricity bag mixed organization comprises dust collecting pole plate (4), dust collecting pole plate (4) is provided with breach (5), crossing in the wind passageway (12) between dust collecting pole plate (4) is provided with electrode bar (6), is provided with filter bag (7) between dust collecting pole plate (4), and the bottom of casing (2) is provided with dust collecting opening (8).
2. the hybrid deduster of electricity bag according to claim 1 is characterized in that: the electricity bag mixed organization in the described deduster is the offset formula and distributes, and electricity bag mixed organization and casing (2) fix.
3. the hybrid deduster of electricity bag according to claim 1 and 2, it is characterized in that: the top of the dust collecting pole plate in the described deduster (4) is provided with deep bead (9), the two ends of casing (2) are respectively one group of filter bag (7) and dust collecting pole plate (4), the centre at casing (2) two ends is provided with electricity bag mixed organization spaced apart, is provided with two groups of filter bags (7) between the dust collecting pole plate (4) in the described electricity bag mixed organization.
4. the hybrid deduster of electricity bag according to claim 3, it is characterized in that: the two groups of filter bags (7) between described dust collecting pole plate (4) are listed as side by side, dust collecting pole plate (4) is provided with a plurality of breach (5), described electrode bar (6) is positioned at the centre bit of dust collecting pole plate (4), and the breach (5) on the dust collecting pole plate (4) is positioned at the centre of two filter bags (7).
5. the hybrid deduster of electricity bag according to claim 1 and 2, it is characterized in that: the two groups of filter bags (7) between described dust collecting pole plate (4) are listed as side by side, dust collecting pole plate (4) is provided with a plurality of breach (5), described electrode bar (6) is positioned at the centre bit of dust collecting pole plate (4), and the breach (5) on the dust collecting pole plate (4) is positioned at the centre of two filter bags (7).
6. the hybrid deduster of electricity bag according to claim 1 and 2, it is characterized in that: described dust collecting opening (8) is back taper, and the bottom of dust collecting opening (8) is provided with ash-valve (10).
CN2009203079058U 2009-08-13 2009-08-13 Electric-bag combined dust collector Expired - Fee Related CN201470284U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009203079058U CN201470284U (en) 2009-08-13 2009-08-13 Electric-bag combined dust collector

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104174492A (en) * 2014-08-22 2014-12-03 成都代代吉前瞻科技股份有限公司 Efficient electrostatic-dielectrophoresis deduster
CN104190537A (en) * 2014-08-19 2014-12-10 阮海生 DEP (dielectrophoresis) purification treatment unit
CN104307638A (en) * 2014-08-19 2015-01-28 阮海生 Efficient DEP electrode structure, plate electrode formed therefrom and electrode array
CN104815489A (en) * 2015-04-15 2015-08-05 江苏大学 High-voltage pulse discharge waste gas purifying device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104190537A (en) * 2014-08-19 2014-12-10 阮海生 DEP (dielectrophoresis) purification treatment unit
CN104307638A (en) * 2014-08-19 2015-01-28 阮海生 Efficient DEP electrode structure, plate electrode formed therefrom and electrode array
CN104307638B (en) * 2014-08-19 2017-05-24 阮海生 Efficient DEP electrode structure, plate electrode formed therefrom and electrode array
CN104174492A (en) * 2014-08-22 2014-12-03 成都代代吉前瞻科技股份有限公司 Efficient electrostatic-dielectrophoresis deduster
CN104815489A (en) * 2015-04-15 2015-08-05 江苏大学 High-voltage pulse discharge waste gas purifying device

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100519

Termination date: 20130813

C17 Cessation of patent right